A little patience, and a spiked card will inevitably retrace back to normalit just takes a few months!
3 The Master, Multiplied But First He Added And Subtracted The Master, Multiplied doesn't come right out and say it, but this is as close to a 'myriad lord' as you can get
The only money to be made here is potentially for high grade copies of these cards and even then, good luck
Mana Drain is exceptionally strong, and most other Magic counterspells cost far more and do far less
Use the mana value of that creature as it last existed on the battlefield to determine which creature cards in your graveyard are legal targets for that ability
Even better, bringing your big creatures back via Sin avoids the exile at end of turn problem Vengeance normally imposes